| 摘要 |
PROBLEM TO BE SOLVED: To provide a high speed multistage turbo blower capable of realizing a die-cast casting, reducing a product cost and an expense and having a small size and excellent mechanical strength and anti-abrasion. SOLUTION: A three-stage impeller 13 is simultaneously rotated by a motor 12, an air flowing into from an inlet port 17 is successively passed through each stage impeller 13, a spiral chamber 3 and a return wing 4 and is discharged from a discharge port 18. A cylindrical casing 1, a first side plate 2 and the return wing 4 having a released slope in a motor shaft direction such that they are integrally constituted by a die-cast casting to be capable of rapping. A second side plate 8 is fixed by clamping it by an edge surface 6 of a diffuser 5 and an edge surface 7 of a next stage return wing 4.
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